Request to access to user's accounts

request.ts

// request to access user account details
this.ethereum = (window as any).ethereum;
this.webby3 = (window as any).web3;
if (typeof this.ethereum == 'undefined') {
    this.dialog.presentToast('Please install MetaMask extension');
    return;
}
try {
    let x = await this.ethereum.enable();
    console.log('ethereum enabled=>', x);
}catch(err) {
    console.log('err=>', err);
    if (err.code == 4001) {
       this.dialog.presentToast('User denied account access..');
       return;
    }
}